Home / 644,553.14-889,172.34-429,417.95

Finding the Fourth Proportional to 644,553.14, 889,172.34 and 429,417.95

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Solution

The fourth proportional to 644,553.14, 889,172.34 and 429,417.95 is: 592,389.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,553.14 : 889,172.34 = 429,417.95 : x
  2. Step 2: Convert to fraction form
    644,553.14/889,172.34 = 429,417.95/x
  3. Step 3: Cross multiply
    644,553.14x = 889,172.34 × 429,417.95
  4. Step 4: Simplify right side
    644,553.14x = 381,826,563,439.50
  5. Step 5: Solve for x
    x = 381,826,563,439.50/644,553.14
  6. Step 6: Final answer
    x = 592,389.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.